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![API INTEGRATION
Create an Interface Class
public interface Interface_all_links_here {
@GET("aps_api/get_all_ads")
Call<Api_Responce[]> getDATA();
}](https://image.slidesharecdn.com/android-171031041444/75/Android-31-2048.jpg)
![API INTEGRATION
Create an Rrequest Class for Api
public class Api_Request extends AbstractRequest<Api_Responce[]> {
public Api_Request(Context context,
ProcessResponceIntrphase<Api_Responce[]> responcec_Handeler) {
super(context, responcec_Handeler);
}
public void get_Data() {
Call<Api_Responce[]> call = _interface.getDATA();
call.enqueue(this);
}
}](https://image.slidesharecdn.com/android-171031041444/75/Android-34-2048.jpg)
![[Individual presentation] android fragment](https://cdn.slidesharecdn.com/ss_thumbnails/individualpresentationandroidfragment-160421152630-thumbnail.jpg?width=640&height=640&fit=bounds)
Android
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- 2. CONTENTS Introduction AndroidLife Cycle Activity Fragment Layout Navigation Drawer Recycler view Shared preference Api integration
- 3. INTRODUCTION HISTORY OFANDROID Android Inc.founded in Palo Alto,california ,united states in October 2003 by Andy Rubin.(Rich Miner, Nick sears and Chris white) WHAT IS ANDROID? It is a open source software platform and operating system for mobile devices , Based on the Linux kernel . Developed by Google and later the Open Handset Alliance (OHA).
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- 5. Android version history Codename Version no. Release date API Level No codename 1.0 September 23, 2008 1 No codename 1.1 February 9, 2009 2 Cupcake 1.5 April 27, 2009 3 Donut 1.6 September 15, 2009 4 Eclair 2.0 – 2.1 October 26, 2009 5-7 Froyo 2.2 – 2.1 May 20, 2010 8 Gingerbread 2.3 – 2.3.7 December 6, 2010 9-10 Honeycomb 3.0 – 3.2.6 February 22, 2011 11-13 Ice Cream Sandwich 4.0 – 4.0.4 October 18, 2011 14-15 Jelly Bean 4.1 – 4.3.1 July 9, 2012 16-18 KitKat 4.4 – 4.4.4 October 31, 2013 19-20 Lollipop 5.0 - 5.1.1 November 12, 2014 21-22 Mashmallow 6.0 – 6.0.1 October 5, 2015 23 Nougat 7.0 – 7.1.2 August 22, 2016 24-25 Oreo 8.0 August 21, 2017 26
- 6. ANDROID LIFE CYCLE The steps that an application goes through from starting to finishing onCreate() onRestart onStart() onResume() onStop() onPause() onDestroy
- 8. ANDROID LIFE CYCLE onCreate() - Called before the first components of the application starts. onRestart - Called after your activity has been stopped, prior to it being started again. onStart() – Called when the activity is becoming visible to the user. onResume() - Called if the activity get visible again. onStop() - Called once the activity is no longer visible. onPause() - Called once another activity gets into the foreground. onDestroy - The final call you receive before your activity is destroyed.
- 9. ACTIVITY Basic componentof most applications Most applications have several activities that start each other as needed Each is implemented as a subclass of the base Activity class The content of the window is a view or a group of views Example of views: buttons, text fields, scroll bars, menu items, check boxes, etc. An activity is started by Context.startActivity(Intent intent) or Activity.startActivityForResult(Intent intent, int RequestCode)
- 10. package com.twixt.uaeexportdirectory.view.activity; import android.os.Bundle; importandroid.os.PersistableBundle; import android.support.annotation.Nullable; import android.support.v7.app.AppCompatActivity; /** * @author Pranav Ashok on 30-09-2017. */ public class Activity extends AppCompatActivity{ @Override public void onCreate(@Nullable Bundle savedInstanceState, @Nullable PersistableBundle persistentState) { super.onCreate(savedInstanceState, persistentState); setContentView(R.layout.activity_xml); } } ACTIVITY
- 11. FRAGMENT About Fragments Newin Android 3.0 (Honeycomb, API 11) Intended to reuse layouts between tablets and phones But usable for many more... A fragment is a modular section of an activity, which has its own lifecycle. A fragment's lifecycle is directly affected by the host activity's lifecycle Activity paused: fragments paused Activity destroyed: fragments destroyed Activity running: fragments can have different states
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- 13. FRAGMENT LIFECYCLE onAttach():This method will be called first, even before onCreate(), letting us know that your fragment has been attached to an activity. onCreate() : The system calls this when creating the fragment. onCreateView() : The system calls this when it's time for the fragment to draw its user interface for the first time. onViewCreated() : This will be called after onCreateView(). onPause() : The system calls this method as the first indication that the user is leaving the fragment (though it does not always mean the fragment is being destroyed). onDestroyView() : It’s called before onDestroy().
- 14. package com.twixt.uaeexportdirectory.view.activity; import android.os.Bundle; importandroid.os.PersistableBundle; import android.support.annotation.Nullable; import android.support.v7.app.AppCompatActivity; /** * @author Pranav Ashok on 30-09-2017. */ public class Activity extends AppCompatActivity{ @Override public void onCreate(@Nullable Bundle savedInstanceState, @Nullable PersistableBundle persistentState) { super.onCreate(savedInstanceState, persistentState); setContentView(R.layout.activity_xml); //type your code here } } FRAGMENT getFragmentManager().beginTransaction() .add(R.id.activity_xml, new YourFragment(), Activity.class.getName()) .commit();
- 15. package com.twixt.uaeexportdirectory.view.activity; import android.app.Fragment; importandroid.os.Bundle; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import com.xtronlabs.uaeexportdirectory.R; /** * @author Pranav Ashok on 30-09-2017. */ public class YourFragment extends Fragment{ @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) { View view=inflater.inflate(R.layout.your_fragment_xml,container,false); return view; } } FRAGMENT
- 16. LAYOUT What isa Layout? Your layout is the architecture for the user interface in an Activity. It defines the layout structure and holds all the elements that appear to the user. How to declare a Layout? Option #1: Declare UI elements in XML Option #2: Instantiate layout elements at runtime
- 17. LAYOUT Types of Layouts RelativeLayout LinearLayout FrameLayout GridLayout TableLayout ConstraintLayout
- 19. NAVIGATION DRAWER Foropening drawer (using java code) drawer_layout_id.openDrawer(Gravity.LEFT); drawerLayout.openDrawer(Gravity.RIGHT); For closing drawer (using java code) drawer_layout_id.closeDrawers();
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- 22. RECYCLERVIEW This widgetis a container for displaying large data sets that can be scrolled very efficiently by maintaining a limited number of views. You need to include gradle file in the dependencies (build.gradle module) Compile 'com.android.support:recyclerview-v7:25.+'
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- 24. RECYCLERVIEW public Rv_Adapter rv_Adapter; publicRecyclerView r_v; Rv_Adapter = new Rv_Adapter (getActivity()); r_v.setAdapter(rv_Adapter); r_v.setLayoutManager(new LinearLayoutManager(getActivity())); //in main xml page <android.support.v7.widget.RecyclerView android:id="@+id/rv_id" android:layout_width="match_parent" android:layout_height="wrap_content“/>
- 26. SHARED PREFERENCE Theshared preference is a class that provide a storage area to store a small amount of temporary data you can save. Shared preference in Android are used to keep track of application and user preferences. Android applications can store data in application preferences. In any application, there are default preferences that can accessed through the PreferenceManager instance and its related method getDefaultSharedPreferences(Context) With the SharedPreference instance one can retrieve the int value of the any preference with the getInt(String key, intdefVal). We can modify the SharedPreference instance in our case using the <br />edit() and use the putInt(String key, intnewVal)
- 27. SHARED PREFERENCE SharedPreferences sp= getActivity().getSharedPreferences("sp_file",Context.MODE_PRIVATE); String i=sp.getString (“key", “default string"); SharedPreferences s_p = getActivity().getSharedPreferences(“sp_file",Context.MODE_PRIVATE); SharedPreferences.Editor editor=s_p.edit(); editor.putString(“key", " your_string "); editor.commit(); //default SharedPreference SharedPreferences sp = getActivity().PreferenceManager.getDeaultSharedPreferences(this);
- 28. API INTEGRATION Connectto the Network <uses-permission android:name="android.permission.INTERNET" /> Manage Network Usage Minimize the amount of sensitive or personal user data that you transmit over the network. Parsing XML Data Integrate data in your xml fields
- 29. API INTEGRATION Things toremember before integrating In manifests <uses-permission android:name="android.permissionINTERNET" /> In build.gradle(Module:app) packagingOptions { packagingOptions { exclude 'META-INF/DEPENDENCIES' exclude 'META-INF/NOTICE' exclude 'META-INF/LICENSE' exclude 'META-INF/LICENSE.txt' exclude 'META-INF/NOTICE.txt' } }
- 30. API INTEGRATION compile 'com.squareup.retrofit2:retrofit:2.1.0' compile'com.squareup.okhttp3:logging-interceptor:3.6.0' compile 'com.squareup.retrofit2:converter-jackson:2.1.0' Things to remember before integrating In build.gradle(Module:app)
- 31. API INTEGRATION Createan Interface Class public interface Interface_all_links_here { @GET("aps_api/get_all_ads") Call<Api_Responce[]> getDATA(); }
- 32. API INTEGRATION Createan Interface Class for processor responce public interface ProcessResponceIntrphase<T> { void processResponce(T responce); }
- 33. API INTEGRATION Createan Rrequest Class for Api
- 34. API INTEGRATION Createan Rrequest Class for Api public class Api_Request extends AbstractRequest<Api_Responce[]> { public Api_Request(Context context, ProcessResponceIntrphase<Api_Responce[]> responcec_Handeler) { super(context, responcec_Handeler); } public void get_Data() { Call<Api_Responce[]> call = _interface.getDATA(); call.enqueue(this); } }
- 35. API INTEGRATION Createan Response Class for Api
- 36. API INTEGRATION Mainactivity/fragement
- 37. TIPS FOR BEGINNER Accounts https://stackoverflow.com https://github.com References https://www.tutorialspoint.com/android https://developer.android.com/training/index.html https://www.javatpoint.com/android-tutorial https://www.youtube.com
Editor's Notes
- #21 <?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="#00e4c9"> <android.support.v7.widget.RecyclerView android:layout_width="match_parent" android:background="@color/colorAccent" android:alpha=".6" android:layout_margin="5dp" android:layout_height="match_parent" /> </RelativeLayout> <RelativeLayout android:layout_width="200dp" android:layout_height="match_parent" android:layout_gravity="left" android:background="#6200ff"> </RelativeLayout> <RelativeLayout android:layout_width="200dp" android:layout_height="match_parent" android:layout_gravity="right" android:background="#ff6f00"> </RelativeLayout> </android.support.v4.widget.DrawerLayout>
- #26 public class Adapter_for_rv extends RecyclerView.Adapter<Adapter_for_rv.ViewHolder> { Context context; public Adapter_for_rv(Context con) { context = con; } @Override public Adapter_for_rv.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { LayoutInflater layoutInflater = LayoutInflater.from(context); return new ViewHolder(layoutInflater.inflate(R.layout.rvlayout, parent, false)); } @Override public void onBindViewHolder(Adapter_for_rv.ViewHolder holder, int position) { //code -> action to be done } @Override public int getItemCount() { return length; } public class ViewHolder extends RecyclerView.ViewHolder { // declarations public ViewHolder(final View itemView) { super(itemView); // finding declared fields and actions here } } }
- #34 package com.twixt.nd; import android.content.Context; import android.util.Log; import java.util.concurrent.TimeUnit; import okhttp3.OkHttpClient; import okhttp3.logging.HttpLoggingInterceptor; import retrofit2.Call; import retrofit2.Callback; import retrofit2.Response; import retrofit2.Retrofit; import retrofit2.converter.jackson.JacksonConverterFactory; /** * @author pranav Ashok on 06-10-2017. */ public abstract class AbstractRequest<T> implements Callback<T> { private static final String base_url = "http://apps.cloudsoftct.com/"; protected Context context; protected Interface_all_links_here _interface; private ProcessResponceIntrphase<T> responcehandler; public AbstractRequest(Context con,ProcessResponceIntrphase<T> rhandler){ context= con; responcehandler =rhandler; HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor(); loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY); Retrofit retrofit= new Retrofit.Builder() .baseUrl(base_url) .client(new OkHttpClient.Builder().addNetworkInterceptor(loggingInterceptor) .connectTimeout(300, TimeUnit.SECONDS) .readTimeout(300,TimeUnit.SECONDS) .build()) .addConverterFactory(JacksonConverterFactory.create()) .build(); _interface=retrofit.create(Interface_all_links_here.class); } @Override public void onResponse(Call<T> call, Response<T> response) { Log.e("response", " ok"); processResponse(response.body()); } @Override public void onFailure(Call<T> call, Throwable t) { Log.e("response ", t.getMessage()+" poe"); processResponse(null); } private void processResponse(T response){ if(responcehandler != null){ responcehandler.processResponce(response); } } }